是清洗牙齒用的, i was too scared to open my mouth. at this time, my mother took me to the dental hospital to see my teeth. it was a young and beautiful doctor xu who received me.最后我從小床上下來,讓我緊張的心情一下子放松起來了,床上有一盞燈照得我的眼睛都睜不開了,小棒的一端有一面鏡子,并告訴我已經(jīng)有五顆蛀牙了。接待我的是一位年輕漂亮的許醫(yī)生,